Add the possibility to specify MediaStreamTrack::remote when creating a track.

Source/platform/exported/WebMediaStreamTrack.cpp

Index: Source/platform/exported/WebMediaStreamTrack.cpp
diff --git a/Source/platform/exported/WebMediaStreamTrack.cpp b/Source/platform/exported/WebMediaStreamTrack.cpp
index 4b7b3ac35f83510b8a11e9e408a1ee0b3b49797d..e4e2e94f72e2af4843efe9f006966ddea7627a14 100644
--- a/Source/platform/exported/WebMediaStreamTrack.cpp
+++ b/Source/platform/exported/WebMediaStreamTrack.cpp
@@ -84,7 +84,12 @@ void WebMediaStreamTrack::initialize(const WebMediaStreamSource& source)
 
 void WebMediaStreamTrack::initialize(const WebString& id, const WebMediaStreamSource& source)
 {
-    m_private = MediaStreamComponent::create(id, source);
+    initialize(id, source, true);

[hta - Chromium, 2014/09/24 10:07:33]

This choice is strange, since it will make remote default to true. But I guess
it is strictly temporary.

+}
+
+void WebMediaStreamTrack::initialize(const WebString& id, const WebMediaStreamSource& source, bool remote)
+{
+    m_private = MediaStreamComponent::create(id, source, remote);
 }
 
 void WebMediaStreamTrack::reset()